Not sure where I ask, I figure here might be good.

I want a digital picture frame that has some sort of API to update. I'm not picky on what as long as I can add and remove content from code. Like an actual Dropbox App integration would be fine too, where whatever files I put in a folder automatically get added to the rotation. Most of them I've seen are along the lines of "login to this terrible web site to manage pictures" or "pull out SD card or plug computer to frame to update".

I don't even mind hosting, like if I give a URL that returns a list of other images to rotate through or something. Fine, that works.

I am aware I could do this with a Pi and any LCD, but I would like a single hardware unit that someone else makes pretty.